JP2000300032A - Harvester for root vegetables - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester for root vegetables capable of accurately cutting leaf and stem parts of root vegetables and preventing damage to bulb parts. SOLUTION: This harvester for root vegetables is obtained by backwardly and forwardly arranging a raising body 31 for raising leaf stem parts of crops, a raking body 3b comprising a pair of left and right lug raking belts for raking the leaf stem parts raised in the rear and a conveying body 3c for nipping and conveying the leaf and stem part raked by the raking body 3b upward to the rear and installing a cutter 6 for cutting the leaf and stem parts in the lower part of starting end of nipping and conveying pathway 5a of the conveying body 3c and installing a digging tool 7 for digging crops in the rear of the cutter 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvester for digging root vegetables such as onions while cutting the stem portions.

[0002]

2. Description of the Related Art Conventionally, as a harvester for root crops, Japanese Unexamined Patent Publication No.
A structure disclosed in Japanese Patent Application Laid-Open No. 191738 is known. In this harvester, the onion leaf stem is raised by a raising body, and the raised leaf stem is squeezed backward by a scraping body and clamped by a clamping conveyance body. After being transported backward with the leaf stem, the leaf stem is cut by a cutter in the middle of the sandwiching transport path, and after the onion falling by this is received by the throwing and discharging carrier,
It is configured to be dropped and dropped on the ground.

[0003]

However, in the onion harvesting machine having the structure as disclosed in the above publication, the bulb portion is grounded by the rocking motion of the excavating tool while the leaf stem is held by the holding conveyor. Since the excavation is performed from the inside, there is a disadvantage that the leaf stem portion in a state where the upper portion is pinched is subjected to severe vertical vibration and is likely to be cut or leaky. In addition, the leaf stem portion in the tilted and withered and shrunk state, and the leaf stem portion that has been dug as described above are transported in a state where the clamping length from the bulb portion is not uniform,
There are problems such as difficulty in accurately cutting the leaf stem at a certain position. Also, the bulb portion of the onion, whose leaf stem has been cut, is once received by the discharge carrier and then discharged from the height at the end at the end, so that it is damaged when falling on the surface of the bulb portion. In addition to easily lowering the quality, there is a problem that the structure of the harvester is complicated and the cost is high because a digging tool having a heavy structure is installed on the front side of the body and a carrier for discharging the bulb portion is provided.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a root crop harvester according to the present invention is firstly provided with a raising body 31 that causes a leaf stem of a crop and a raising body 31 behind the raising body. Body 3b consisting of a pair of left and right rugged scraping belts 36 for scraping the leaf stems, and a transport body 3c for nipping and transporting the leaf stems scraped by the scraping bodies 3b upward and rearward. Are arranged back and forth, and the nipping transport path 5 of the transport body 3c is
a cutter 6 for cutting the leaf stem below the starting end of a.
A digging tool 7 for digging crops is provided behind the cutter 6.

[0005] Second, a pair of right and left conveyor belts 5 stretched over an upper wheel 51 and a lower wheel 52 are opposed to each other to form a nipping and conveying path 5a. It is characterized in that it is provided so as to be movable on the side and adjusts the holding start end.

Third, the cutting height is adjusted by raising and lowering the cutter 6 in a substantially parallel manner along the holding and conveying path 5a of the conveying body 3c.

[0007] Fourth, the excavator 7 is installed in the traveling wheels 20 of the body in a side view.

[0008]

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a harvester, which is composed of a traveling body 2 and a working unit 3. The traveling body 2 is provided with body frames 21 and 21 before and after a transmission 4 that supports a traveling wheel 20.
R is integrally extended, and a gauge wheel 22 for supporting the front side of the fuselage and adjusting the vehicle height is provided on the right side of the three-dimensional frame-shaped body frame 21 on the front side.
1, a work unit 3 having a configuration to be described later is installed, an engine E is mounted on a rear body frame 21R, and a loop-shaped handle 41 is extended above a transmission 4 toward the rear.

On the left side of the handle 41, a traveling lever 4L and a working lever 4S are provided side by side, and on the right side, a tread lever 4R for adjusting the tread of the left and right traveling wheels 20 is installed. When operated forward, the engine power is transmitted to the input shaft 4 of the transmission 4 shown in FIG.
0 to advance the aircraft forward, and the travel lever 4L
Is operated on the input shaft 40a to move the fuselage backward, and when the work lever 4S is operated on the front side, the input is input from the output shaft 42 to the input shaft 30 of the work unit 3 to drive the respective parts, and the onion is turned on. We can do the harvesting work. In addition, when the tread lever 4R is operated, the left running wheel 20 is moved and adjusted in the width direction via a tread adjusting mechanism (not shown) so that running suitable for the ridge width can be favorably performed.

The gauge wheel 22 is mounted on the body frame 2.
1 through a drive case 22a and a telescopic cylinder 22b including a screw mechanism so as to run at the same position as the right traveling wheel 20. Side holder 22c
By extending the operation handle 22d supporting the middle part in the rearward direction, the telescopic cylinder 22b can be expanded and contracted by the rotation operation of the operation handle 22d, and the height position of the gauge wheel 22 can be adjusted. ing.

The working unit 3 includes a raising device 3a for raising two leaning rows of onions cultivated in rows along the ridges, and a leaf stem in the middle of the raising device 3a. Body 3b that rakes the portion inward from both sides and guides it backwards, and a carrier 3c that nips and conveys the leaf stem portion squeezed at the lower rear portion upward and rearward, and extends in the sandwiched state. A cutting section 3d having a cutter 6 for cutting the cut leaf stem at a desired height from the ground, and a digging section 7 having a digging tool 7 for digging onions having a leaf stem cut off from the ground at a lower rear portion thereof 3e and the like.

Hereinafter, each configuration of the working unit 3 will be described in detail.
First, the raising device 3a forms a two-line raising path by arranging three vertical raising bodies 31 having the same configuration as the conventional one with the divider 31a in a digging width in a backward inclined posture. 2 and 7, a driving horizontal shaft 32 connecting the upper portions of the respective raising members 31 in series by a transmission path shown in FIGS.
Is transmitted via an intermediate shaft 33 extending from the left end of the input shaft 30 so that the raising claws 34 of the respective raising members 31 can be simultaneously vertically raised and rotated.

The scraping body 3b is a state in which a scraping belt 36 having a plurality of flexible scraping lugs 35 projecting therefrom is suspended between a driving pulley 36a vertically supported vertically and a driven pulley 36b. In a state in which the pair of left and right members are rotatably inwardly opposed to each other, and each of the squeezing belts 36 is arranged in the raising path formed by the raising member 31, the pulling belt 31 is substantially parallel to the backward tilting posture. In a configuration installed in a slanted posture,
The two-leaf stem extended by the raising claw 34 of the raising device 3a is squeezed from both sides to the center, and the leaf stem is held in a good posture while the leaf stem is held in the conveying path 5a of the carrier 3c.
To be able to be smoothly guided to the holding start end. The drive pulley 36a of the scraping belt 36 is moved from a lower wheel 52 of a transport body 3c described later to a chain 3 shown in FIG.
7 and the universal joint shaft 38, etc., and is supported so as to be able to swing downward about the universal joint shaft 38 to the side, so that the scraping width can be adjusted. .

Next, the carrier 3c will be described. As shown in FIG. 6, the transport body 3c has a pair of left and right transport belts 5 having a soft and thick wall for holding the leaf stem softly and accurately, and a base part attached and fixed to the body frame 21 and the transmission 4. And a transfer frame 50 for supporting a belt tension extending in a forward and downward inclined posture, and upper wheels (drive pulleys) supported by the transfer frame 50 so as to be rotatable in the longitudinal direction and disposed on the lower side and the upper side in the transfer direction. 51, 51a and a lower wheel (driven pulley) 52; rolling wheels 53, 53 for tensioning the belt on the non-nipping and conveying surface side; and a guide wheel 55 for defining the upper limit of the nipping start end of the conveying belt 5 on the nipping and conveying surface side. It consists of.

The left and right upper wheels 51, 51 rotate the right and left transport belts 5, 5 inwardly to each other by a drive shaft 39 erected from the input shaft 30. Further, a star wheel 5S having a diameter larger than that of the upper wheel 51 and having a shape shown in FIG. 4 is integrally attached and fixed to an upper portion of the upper wheel 51 on the right side. The discharge at the end of the nipping conveyance can be accurately performed toward the rear right side.

When the left and right conveyor belts 5 are wound around the respective wheels, the transmission causes the upper wheels 51 to rotate inwardly with the upper wheels 51 as driving wheels, and the leaf stems are moved from the front to the rear on both conveying surfaces. A nipping transport path 5a for nipping and transporting upward is formed, and the nipping transport path 5a has a rearwardly inclined posture that is gentler than the inclination of the scraping body 3b in a side view. Thus, the leaves and stems that are nipped and conveyed in a state where the support of the middle part is released by the scraping body 3b can be nipped and conveyed rearward and upward in a standing posture without significant retreat. Creating benefits.

Further, in the illustrated example, the lower wheel 52 is pivotally supported on a distal end of a movable frame 56 which is supported by a pivot 50a provided at the distal end of the transfer frame 50 so as to be swingable to the left and right. The movable frame 56 is provided with an arc-shaped long adjustment hole 57 centering on the support shaft 50a in the outer plate portion thereof, and an adjustment screw 58 is inserted into the adjustment hole 57 to attach the mounting piece 2 of the body frame 21 to the mounting piece 2.
1a so that it can be attached and fixed so as to be adjustable in position. According to this configuration, the holding start end of the holding conveyance path 5a is the foremost side in the solid line in FIG.
2 is rotated to the outside on both sides in a dotted line state,
Since the belt surface between the guide wheel 55 and the guide wheel 55 is a guide surface that is widened forward, the nipping start end is on the guide wheel 55 side.

Therefore, when the onion leaf stems planted on the ground are in a neat standing posture without tilting with relatively small stalks, the nipping start end is set as forward as possible and the nipping and conveying is started immediately. It is good to feed backward, and if the leaf stem is a large stem or is extremely inclined, adjust the clamping start end as far as possible as far as possible to perform clamping and conveyance while giving guidance for clamping and squeezing by front spreading. This makes it possible to properly assemble even the leaf stems in which the waist is weak and in the bent state, so that squeezing and conveying can be performed satisfactorily. In addition, when the cutter 6 is adjusted so that the cutter 6 is widened when raised and narrowed when lowered, the cutter 6 is cut properly by the cutter 6 while preventing damage to the leaf stem. It can be performed accurately at a fixed position.

Next, the configuration of the cutting section 3d will be described. As shown in FIGS. 9 and 10, the cut portion 3 d is a pair of left and right sides that can rotate inward each other, and has a saw-disk-shaped cutter 6 in which adjacent sides partially overlap one another up and down. And an elevating mechanism 6a for vertically adjusting (cutting height adjustment) so that the cutting position of the leaf stem can be selected. The lifting mechanism 6 a includes a cutter case 60 that supports the left and right cutters 6 for pivotal support, a lifting frame 61 that is fixedly attached to both ends of the cutter case 60, and a tilt of the transport body 3 c on the left and right sides of the machine frame 21. The lifting frame 6 is arranged along a substantially parallel shape at an inclined angle and in a channel having a U-shaped cross section.
Left and right guide frames 62 for guiding slide 1 so as to be slidable,
62a, a lifting / lowering operation tool 63 for integrally moving the cutter 6, the cutter case 60 and the movable frame 56 from the handle 41 side, a transmission mechanism 8 for freely transmitting the cutter 6 from the input shaft 30 side also when the lifting / lowering adjustment is performed, and the like. It consists of.

The above-mentioned components will be described in detail. The left and right elevating frame 61 is a sliding roller 61 that rolls in a guide frame 62.
a, an installation screw 6N for stably positioning and fixing the cutter 6 by being fixedly fastened to the guide frame 62, and an adjustment wheel 81 for removing the slack of the chain 80 of the transmission mechanism 8. In addition, the guide frame 62 has a long hole 62 which is movable on the side surface of the guide frame 62 through which the mounting screw 6N is inserted, and has a vertically movable stroke. A locking guide 65 is provided for selectively positioning and locking the projection 64 in a plurality of stages over the length of the vertical stroke.

The lifting / lowering operating tool 63 has an operating rod 67 having a handle at the upper end and the projection 64 and the pulley 66 at the lower end.
Is slidably fitted and supported in a holder 68 that is swingably provided on the body frame 21, and both ends of a wire 69 are fixed between the guide frame 62 and the cutter case 60,
An intermediate portion of the wire 69 is wound around and supported by the pulley 66.

As shown in FIG. 9, the transmission mechanism 8 includes a chain 80, a driving sprocket 82 provided on the input shaft 30,
A cutter sprocket 8 provided on a cutter shaft 83 which is pivotally supported in the cutter case 60 and rotates the cutter 6 in the longitudinal direction.
5, a driven sprocket 86 pivotally supported on the rear end side of the guide frame 62, and a tension sprocket 87 biased and supported in the chain tension direction from the body frame 21 side.
The outer side of the chain 80 between the cutter sprocket 85 and the tension sprocket 87 is pressed in contact with the adjusting wheel 81 in the direction in which the chain wrap angle of the cutter sprocket 85 increases to efficiently transmit the chain to the cutter sprocket 85 that moves when the cutter 6 moves up and down. So that it can be done smoothly. Reference numeral 89 denotes a stopper that restricts the inside of the tension sprocket 87 from moving when the cutter 6 is raised.

With this configuration, the operation rod 67 is moved from the lowest position of the cutter 6 in which the projection 64 of the lifting / lowering operation tool 63 is located at the lowermost end of the locking guide 65 as shown by a solid line in FIG.
When the protrusion 64 is locked to the uppermost end of the locking guide 65 as shown by a dotted line in FIG.
0 changes the suspension state as shown by the dotted line in FIG. 9, and the cutter 6 moves the guide frames 62 on both sides via the elevating operation tool 63.
In step (a), the ascendant moves smoothly while being supported stably, and the highest position, that is, the leaf stem is cut so as to be left long on the bulb side.

At this time, when the mounting screw 6N is tightened, the lifting frame 61 can be firmly fixed to the movable frame 56 without looseness, so that the cutting operation can be performed satisfactorily while preventing vibration. The cutter 62 is disposed obliquely in a substantially parallel manner along the inclination of the conveyor belt 5 below the conveyor belt 5 for nipping and conveying the leaf stem in a backward inclined posture.
The cutter 6 can adjust the cutting height in a parallel manner along the nipping and conveying path 5a in the elevating stroke length, so that the cutting posture of the leaf stem and the nipping relation by the nipping and conveying path 5a are changed at any position. Therefore, a good cutting and conveying operation can be performed without any trouble. Also, cutter 6
Raises the machine body center of gravity when it rises, but without raising the center of gravity in front of the vehicle greatly separated from the traveling wheel 20, in the above-described elevating method, the cutter 6 is moved closer to the traveling machine body 2 at a high position, Can be improved in stability.

In this state, the cutter sprocket 85 moves in the direction in which the chain 80 is slackened with the upward adjustment of the cutter 6, but the adjusting wheel 81 provided on the lift frame 61 moves together to perform slack removal. There is an advantage that the chain transmission of the cutter 6 can be smoothly performed at any position of the cutter 6 without changing the chain winding angle of the cutter sprocket 85. In addition, the left and right cutters 6 whose adjacent sides are in contact with each other are stretched while holding the upper part of the onion leaf portion of two onions by the holding and conveying path 5a, and the lower halfway portion on both sides. From the central part by inward rotation from above, and cut into a pinched shape, so that the cutting of the leaf stem can be accurately performed, and the leaf stem held by the carrier 3c at the time of cutting is not disturbed. There is an advantage that it can be quickly swept away in the transport direction while being collected, and that the next leaf stem can be cut cleanly.

Next, the digging section 3e will be described. The digging portion 3e includes a pair of left and right digging tools 7 having a blade portion 7a and an attachment portion 7b formed by bending an intermediate portion of a flat steel plate into an L shape,
A driving unit 7c that swings the blade 7a in the front-rear direction while supporting the mounting portion 7b of the both excavators 7 in a hanging posture in which the blade 7a faces inward with a digging width, and a blade. 7a
And an adjusting portion 7d for adjusting the digging height of the digging tool 7e.
0, and the blade portion 7a is attached and supported so as to be near the outer periphery of the traveling wheel 20 at the lowest position of the digging tool 7.

The excavating tool 7 has a plurality of excavating rods for sharpening the leading edge of the blade portion 7a and guiding the bulb portion cut and raised by the blade portion 7a to the ground surface at the rear edge. 70 are extended at coarse intervals, and a middle part of the mounting portion 7b is slidably inserted from below into a mounting bracket 71 rotatably supported by a support shaft 72 on the body frame 21 and excavated later. The digging height is supported by a digging support mechanism 7e. The driving unit 7c is provided with the mounting bracket 71.
By connecting the bracket arm 71a extending upward from the crankshaft 30a provided on both sides of the input shaft 30 via a crank rod 30b and a connecting pin 30c,
By the reciprocating operation of the crank rod 30b accompanying the rotation of the input shaft 30, the left and right digging tools 7 can be simultaneously rocked about the support shaft 72 as a fulcrum.

The adjusting section 7d includes a digging lever 73 rotatably provided on a lever guide 73a provided on the rear side of the body and a rotating shaft 75 provided rotatably above the front side of the body frame 21. A lever-side link 75a and a digging-side link 75b provided integrally with changing phases, and a wire 76 connecting the lever-side link 75a and the digging lever 73
And a wire 76b for connecting the digging side link 75b and the upper end of the digging tool 7 via a spring 76a.

The right digging tool 7 is also provided on the body frame 21 in the same configuration as the left digging tool, and has a digging side link 75b and a spring 76 provided on a rotating shaft 75 extending rightward.
a, connected via a wire 76b,
Is rotated in the direction of the arrow in the same drawing, so that the left and right digging tools 7 can be simultaneously raised via the wire 76, the lever side link 75a, the digging side link 75b, the spring 76a, and the wire 76b. ing.

In the above configuration, the left and right digging tools 7
The excavator 7 is connected to the upper end of the mounting portion 7b via a wire 78 by connecting a pull spring 77 provided along the side surface of the left and right raising body 31 via a wire 78, so that the excavator 7 is excavated by the excavation lever 73. When the excavator 7 is not lowered by its own weight when the excavating lever 73 is operated in the direction opposite to the arrow and the wires 76 and 76a are loosened by always urging downward at the take-up position, It can be lowered smoothly. The wires 76, 76b and the wires 78 are wound around and guided by pulleys 79 which are rotatably mounted and supported at predetermined positions of the body frame 21, so that each operation can be performed accurately and smoothly from a predetermined direction. In addition, the installation location of the pulling spring 77 is compactly and collectively installed by effectively using the side surface of the long raising body 31.

Therefore, the digging tool 7 configured as described above
When digging root crops, as shown in FIG. 4 and FIG. 1, when the digging lever 73 is adjusted so that the blade portion 7a has a depth of about 3 cm in the ground, the blade portion 7a becomes a bulb. It is located in the middle of the follicles vegetated on the underside of the plant, cutting the follicles while digging and crushing the soil by rocking motion, and digging up the surface accurately while sifting off the soil attached to the bulbs with the excavation rod 70. Thus, the excavated bulb portion can be collected easily and efficiently.

When digging a ginseng or the like having a deep root, the digging tool 7 can be lowered greatly easily, so that the ginseng can be dug well without cutting. When the vehicle is traveling on the road, as shown in FIG. 8, the digging tool 7 can be pulled up and stored at substantially the same level as the vehicle height of the abdomen of the body. Prevented running over ridges can be performed without any trouble.

The digging tool 7 includes springs 76a,
Up and down operation is controlled by wires 76b and 78 provided via
It is possible to prevent a large resistance from being generated in the rocking motion and to prevent generation of noise and the like, and it is possible to elastically move up and down when the blade portion 7a comes into contact with an obstacle such as a stone. After the evacuation, since the spring 77 immediately returns to the original excavation position by the downward urging force, the excavation portion 3e
Excavation work can be performed efficiently while preventing damage to the ground.

With this configuration, even if, for example, soil or the like is caught between the mounting bracket 71 and the mounting portion 7b, or if rust or the like is generated, the digging tool 7 is rocked by the idle operation while digging. By operating the lever 73, these contaminants can be easily removed.
There is an advantage that the elevating operation can always be performed smoothly.

When the onion digging operation is performed in the harvester 1 constructed as described above, as shown in FIGS. 4 and 1, the width of the scraping body 3b and the setting of the nipping start end of the transporting body 3c are set. The adjustment is properly set in consideration of the conditions such as the cropping width of the onion and the inclination of the leaf stem, and the cutter 6 of the cutting portion 3d is adjusted.
After setting the height, the digging depth of the digging tool 7 of the digging part 3e is adjusted, and the machine body is advanced while driving the working part 3, so that the digging work can be performed efficiently and well. You can do it. Prior to the excavation work, the left traveling wheel 20
By adjusting the wheel width according to the ridge width from the storage position of the solid line that can be loaded on a truck, etc., the harvester 1 is stably excavated without stepping on the ridge in a proper posture by running on a groove extending across the ridge. It is possible to carry out taking work.

That is, when the harvester 1 is advanced by moving the working lever 4S and the traveling lever 4L, the raising body 31
While raising the leaf stem portion of the onion, the scraper 3b behind the leaf stem squeezes the leaf stem portion from both sides and collects and holds the carrier.
Transfer to the starting end of c. Next, the carrier 3c
In a state where the leaf stems are held in the extended posture by the conveyor belts 5 on both sides, the leaf stems are gathered at a central portion by a pair of right and left left and right cutters 6 and 6 positioned below and rotating inward. It is cut quickly without cutting leakage or clogging while being cut, so that there is no loss of quality due to cutting off the leaf stem etc. remaining on the bulb side, and the cut leaf stem is pinched From the end of the transport path 5a to the shooter 2
The air is smoothly discharged toward the ridge groove on one side of the fuselage through S.

At this time, since the cutting portion 3d supports the cutter 6 so as to be able to move up and down along the guide frame 62 provided in an inclined posture that rises from the ground surface side toward the machine body side, the cutter 6 is raised. With this approach, it is possible to stably work even at the time of high mowing, in which the leaf stem is cut at a high position, and the posture of the cutting part 3d does not change with the ascent and descent. The cutting height can be easily adjusted and cutting can always be performed satisfactorily, and short and long cuttings can be easily and easily shipped with low cutting, and long cuttings can be bundled and shipped with high cutting. There are also advantages such as being able to do so.

Next, the excavating tool 7 oscillates from the rear at an appropriate depth in the ground, so that the blade portion 7a digs the soil from below the bulb portion. When crushing while raising, it cuts the middle of the hair root and transfers it to the excavating rod 70 that extends rearward, and the excavating rod 70 allows the bulb part to be dug up well on the ground surface while performing good soil removal of the bulb part Become. Therefore, the excavated bulb portion can be collected easily and efficiently, and the harvested bulb portion is once lifted and transported to cut the leaf stem portion, and then the bulb portion is moved from a high place to the ground surface. Compared to the conventional method of releasing, the bulb portion is not damaged, so that it is possible to perform a high quality harvesting operation and to provide a simple and inexpensive excavator. .

The digging tool 7 is mounted on the traveling wheel 2 in a side view.
Since it is configured to be installed within approximately the wheel diameter of 0, vibration and reaction force due to the swinging motion of the digging tool 7 can be suppressed, and vibration is generated on the front side of the body like a conventional one. Running wheels 2
There is an advantage that vibration can be absorbed at zero.

[0040]

According to the present invention having the above-described structure, the following effects can be obtained. While the leaf stem portion of the crop caused by the raising body is accurately relayed to the carrier while being squeezed and held by the scraping body, the leaf stem portion can be accurately cut by a cutter below it, The excavation tool digs up the crop whose leaf stem has been cut off and digs it up neatly on the ground surface and places it on the ridge, so that high quality harvesting work can be performed without damaging the crop and The configuration can be simplified. In addition, since the bulb portion is dug up after raising and cutting the leaf stem portion, the cutting position of the leaf stem portion with respect to the bulb portion is constant, and the commercial value of onions and the like can be increased.

Further, the nipping conveyance path formed by the pair of left and right conveying belts facing each other can be easily adjusted at the starting end of the nipping by providing the lower wheel of the conveying belt so as to be movable to the side. In addition, it is possible to satisfactorily start the pinching adapted to the crop while preventing clogging and pinching omission.

Further, the cutter is raised and lowered substantially in parallel along the inclination of the holding / conveying path of the conveying body, so that the cutter can hold the cutting stem at any position and the holding relation by the holding / conveying path. Cutting can be performed without changing the center of gravity, and the trouble caused by the fluctuation of the center of gravity due to the rise of the cutter can be prevented, and the stability of the machine body can be improved.

Further, since the digging tool is close to the traveling wheel, it is possible to suppress impact, vibration and the like during digging.

[Brief description of the drawings]

FIG. 1 is a side view of a harvester.

FIG. 2 is a plan view showing a main part of FIG. 1;

FIG. 3 is a plan view showing an arrangement configuration of a main part of a working unit.

FIG. 4 is a front view showing the onion harvesting operation of the harvester.

FIG. 5 is a plan view showing a configuration of a body frame.

FIG. 6A is a plan view illustrating a configuration of a transport body. (B) is a side sectional view of (A).

FIG. 7 is a transmission system diagram of the harvester.

FIG. 8 is a side view of the harvester in which the cutter and the digging tool are raised.

FIG. 9 is a side view showing a configuration of a lifting mechanism and a transmission mechanism of the cutter.

FIG. 10 is a front view of FIG. 9;

FIG. 11A is a side view showing a left digging tool and its support structure. (B) is a front view which shows the structure of the principal part of (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Harvester (digger) 2 Running body 3 Working part 3a Raising device 3b Raised body 3c Carrier 3d Cutting part 3e Digging part 4 Transmission 5 Transport belt 5a Nipping transport path 6 Cutter 6a Lifting mechanism 7 Digging tool 8 Transmission mechanism 20 Running wheel 31 Puller 36 Raising belt 51 Upper wheel 52 Lower wheel 62 Guide frame 71 Mounting bracket 73 Digging lever 76, 76b, 78 Wire 77 Pulling spring

Claims (4)

[Claims] 1. A priming element 31 which causes the leaf stem of a crop.
Body 3b consisting of a pair of left and right rugged scraping belts 36 for scraping the leaf stem caused behind the leaf stem, and the leaf stem scraped by the scraped body 3b is directed rearward and upward. The transport body 3c for nipping and transporting is arranged back and forth, and
c. A root vegetable harvesting machine provided with a cutter 6 for cutting the leaf stem below the starting end of the nipping and conveying path 5a, and a digging tool 7 for digging crops behind the cutter 6. 2. A pair of right and left conveyor belts 5 stretched around an upper wheel 51 and a lower wheel 52 are opposed to each other to form a nipping conveyance path 5a. 2. The root vegetable harvester according to claim 1, wherein the root starter is adjusted so as to be adjustable in movement. 3. The root vegetable harvesting machine according to claim 1, wherein the cutter 6 is moved up and down substantially in parallel along the holding and conveying path 5a of the conveying body 3c to adjust the cutting height. 4. The excavating tool 7 is mounted on a traveling wheel 20 of the body in side view.
The root crop harvester according to claim 1, 2 or 3, which is installed in the inside.